My Madbean HP is pretty damn noisy. Is there any way I can reduce this without using a noise gate? Anything I can add to the circuit to filter out some of the noise?
This is my favorite circuit, but man does it suck to record with.
You could try strapping a small capacitor across the power jack terminals. Try 100pf. Make sure your grounding is good. You could try shielded in/out wire with the shield grounded. Probably not a whole lot you can do on such a small circuit.
